.s {
    width:1000px;
    height:100px;
	background-color: #F7BE81;
	line-height: 0.4;
	text-align: left;
}
.op{
    top:300px;
	left:50px;
    width:1000px;
    height:200px;
    margin-left: auto;
    margin-right: auto;
	min-height: 200px;
    vertical-align: middle;
    border:1px solid black;
    border-radius: 10px;
	line-height: 0.4;
	text-align: center;
	float:center;
	background-color: #F2FBEF;
}	
.pr {
    top:500px;
	left:50px;
    width:1000px;
    height:200px;
	margin-left: auto;
	margin-right: auto;
    vertical-align: middle;
	min-height: 150px;
	border:1px solid black;
	border-radius: 10px;
	line-height: 0.4;
	line-height: 0.6;
	text-align: center;
	float:center;
	background-color: #F2FBEF;
}	
.sky {
	top:700px;
	left:50px;
	width:290px;
	height:200px;
	margin-left: auto;
	margin-right: auto;
    vertical-align: middle;
	min-height: 150px;
	border:1px solid black;
	border-radius: 10px;
	line-height: 0.4;
	text-align: center;
	float:center;
	background-image: url(sky.png);
}
.surv {
	top:900px;
	left:50px;
	width:290px;
	height:200px;
	margin-left: auto;
	margin-right: auto;
    vertical-align: middle;
	min-height: 150px;
	border:1px solid black;
	border-radius: 10px;
	line-height: 0.4;
	text-align: center;
	float:center;
	background-image: url(surv.png);
}
.ortext {
	color: #FF8000;
}